Full-face NBC/CBRN protection from Mestel Safety. The SGE 400/3 gas mask features a soft silicone face seal, ballistic-rated polycarbonate visor, and three 40mm NATO filter ports (left, right, center) so you can mount the filter wherever works best for your situation—including optimal positioning for rifle shouldering. Includes one sealed NBC filter. EN136:1998 certified. Made in Italy by Mestel Safety, a leader in military and first responder protective equipment. Assembled in USA.

Features

• 3x 40mm NATO Filter Ports — Left, right, and center mounting options for comfortable wear and unobstructed rifle shouldering
• Ballistic Polycarbonate Visor — 92% visible light transmission; tested to resist a 1" steel ball at 335 MPH without cracking
• Chemical-Resistant Visor Coating — Special resin treatment resists chemical attack and scratching
• Soft Silicone Face Seal — Anallergic double-bellow design creates comfortable, airtight fit
• Wide Field of Vision — Full-face coverage provides peripheral visibility plus debris protection
• Six-Strap Quick-Release Harness — Rapid donning and doffing; adjustable for secure fit
• Orinasal Cup — Ergonomic inner cup with controlled airflow prevents fogging even in extreme cold
• Heat Resistant — Tested at 800°C (1472°F) for 5 seconds and 200°C (392°F) for 6 minutes
• Lightweight — 710g (S/M) or 750g (M/L)
• Reusable — Easy maintenance; designed for repeated use
• Filter Included — Comes with one sealed NBC filter (40mm NATO)

Specifications 

• Model: SGE 400/3
• Manufacturer: Mestel Safety 
• Filter Ports: 3x 40mm NATO (EN148-1 / DIN 3183)
• Face Seal Material: Soft anallergic silicone (double-bellow)
• Visor Material: Polycarbonate with chemical-resistant coating
• Visor Light Transmission: 92%
• Visor Impact Rating: Resists 1" steel ball at 335 MPH
• Heat Resistance: 800°C for 5 sec / 200°C for 6 min
• Weight: 750g 
• Certifications: EN136:1998, EU PPE Category III (Regulation 2016/425)
• Included: Mask + 1x sealed NBC filter
• Compatible With: All 40mm NATO filters, powered respirators, airline systems

Frequently Asked Questions

Q: What's the difference between SGE 400/3 and SGE 400/3BB? A: The SGE 400/3 has a silicone face seal. The SGE 400/3BB has a butyl rubber face seal, which provides superior resistance to chemical warfare agents (nerve agents, mustard gas) and meets stricter CBRN requirements. The 400/3BB is also slightly lighter. If you need maximum chemical protection, consider the 400/3BB version in our NBC Protective Kit.

Q: Does this include a filter? A: Yes. One sealed NBC filter is included. We recommend stocking spare filters for extended use or multiple threats.

Q: What does the filter protect against? A: The included NBC filter protects against chemical warfare agents (sarin, mustard gas, VX), biological threats (bacteria, viruses, spores), radioactive particulates, industrial chemicals, tear gas (CS/CN), and toxic vapors.

Q: How long does the filter last? A: Sealed and stored properly, filters have approximately a 10-year shelf life. Once opened or exposed to contaminants, replace after use or per manufacturer guidance based on exposure level.

Q: Why does this mask have 3 filter ports? A: The left, right, and center ports let you position the filter where it's most comfortable and least obstructive. Shooters typically mount on the opposite side of their dominant eye for unobstructed rifle shouldering.

Q: Can I use other 40mm NATO filters with this mask? A: Yes. The SGE 400/3 accepts any 40mm NATO threaded filter (EN148-1 / DIN 3183), including the NBC-77 SOF and other CBRN filters.

Q: Is this mask reusable? A: Yes. The mask itself is designed for repeated use with proper maintenance. Filters should be replaced after exposure to contaminants.

Q: What certifications does this mask have? A: EN136:1998 certified. EU PPE Category III per Regulation 2016/425.

☢️Complete Your NBC Setup

DLG-5S Drop Leg Gas Mask Carrier - $34.95 - Keep your mask on your person, ready to deploy

Multipurpose CBRN 40mm Filter - $54.95 - Stock spare filters for extended scenarios